The Air Force is now arming its fleet of B-52 Bombers with prototype nuclear-armed cruise missiles to prepare the aircraft for the possibility of launching the Long Range Stand Off (LRSO) weapon.
Through a $250 million deal, the Air Force will work with B-52 manufacturer Boeing to build missile carriage hardware and software, and “test” LRSO integration.
The Air Force has been working with industry on prototyping and design work on the emerging Long Range Stand-Off weapon nuclear-armed cruise missile, set to enter into a new phase of construction by 2022, service officials said. Raytheon and Lockheed, are now working on a $900 million Technology Maturation and Risk Reduction deal for the LRSO.
Due to emerging nuclear weapons threats, the Air Force now envisions an operational LRSO by the end of the 2020s - as opposed to prior thoughts that it may not be ready until the 2030s.
Air Force officials tell Warrior Maven that plans to move into the Engineering and Manufacturing Development phase are on track for 2022.
US Air Force weapons developers believe the emerging nuclear-armed Long-Range Stand-Off weapon will enable strike forces to attack deep within enemy territory and help overcome high-tech challenges posed by emerging adversary air defenses.
Air Force officials also tell Warrior Maven the developing LRSO is, by design, closely aligned with the Pentagon’s Nuclear Posture Review.
The LRSO will provide an air-launched component to the Pentagon’s current wish to expand the attack envelope possibilities for its nuclear arsenal; the NPR calls for the addition of a new low-yield submarine-launched nuclear-armed cruise missile.
A cruise missile armed with nuclear weapons could, among many things, potentially hold targets at risk which might be inaccessible to certain stealth aircraft, given the growing pace at which modern air defenses are able to detect a wider range of aircraft - to include the possibility of detecting some stealth bombers.
As a result, senior Air Force leaders continue to argue that engineering a new, modern Long-Range Standoff weapon with nuclear capability may be one of a very few assets, weapons or platforms able to penetrate emerging high-tech air defenses. Such an ability is, as a result, deemed crucial to nuclear deterrence and the commensurate need to prevent major-power warfare.
Therefore, in the event of major nuclear attack on the US, a stand-off air-launched nuclear cruise missile may, along with submarine-launched nuclear missiles, be among the few weapons able to retaliate and function as an essential deterrent against a first-strike nuclear attack.
The LRSO will be developed to replace the aging AGM-86B Air Launched Cruise Missile or ALCM, currently able to fire from a B-52. The AGM-86B has far exceeded its intended life span, having emerged in the early 1980s with a 10-year design life, Air Force statements said.
Unlike the ALCM which fires from the B-52, the LRSO will be configured to fire from B-52 and B-21 bombers as well, service officials said; both the ALCM and LRSO are designed to fire both conventional and nuclear weapons.
While Air Force officials say that the current ALCM remains safe, secure and effective, it is facing sustainment and operational challenges against evolving threats, service officials also acknowledge.
B-52 Internal Weapons Bay
Configuring the B-52 to fire the LRSO is also aligned with the current Air Force effort to reconfigure the aircraft’s weapons bays. In recent years, the historic B-52 bomber has been able to carry JDAM weapons externally, but through a currently ongoing Internal Weapons Bay Upgrade, the aircraft will be able to internally house some of the most cutting edge precision-guided Joint Direct Attack Munitions and Joint Air-to-Surface Standoff Missiles, among others, service platform developers told Warrior Maven.
The 1760 Internal Weapons Bay Upgrade, or IWBU, will allow the B-52 to internally carry up to eight of the newest “J-Series” bombs in addition to carrying six on pylons under each wing.
Pilots and B-52 modernization experts have said that having an increased internal weapons bay capability affords an opportunity to increase fuel efficiency by removing bombs from beneath the wings and reducing drag.
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The first increment of IWBU integrates an internal weapons bay ability to fire a laser-guided JDAM, officials said.
B-52 weapons developers have added that a second increment, to finish by 2022, will integrate more modern or cutting-edge weapons such as the Joint Air-to-Surface Standoff Missile, or JASSM, JASSM Extended Range (ER) and a technology called Miniature Air Launched Decoy, or MALD. A MALD-J “jammer” variant, which will also be integrated into the B-52, can be used to jam enemy radar technologies as well.
IWBU, which uses a digital interface and a rotary launcher to increase the weapons payload, is expected to cost roughly $313 million, service officials said.
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